Hi Guys. I have a 2003 A4, yesterday my symphony headunit stopped working. So I went out and bought a new Sony head unit, along with the fascia plate and a wiring loom adapter. Here’s the proble. Everything fitted exactly as it should apart from I have no power to the stereo? On the wiring loom adapter there is 5 pins, on my original Audi loom it has 4 pins only 2 of these connect to the adapters pins? Please can anyone advise me on if I need to move any of the other pins? If not, what do I need to do to get power to the new head unit? Thanks in advance.